55203525 has 84 divisors (see below), whose sum is σ = 111000708. Its totient is φ = 27060480.

The previous prime is 55203523. The next prime is 55203553. The reversal of 55203525 is 52530255.

55203525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 12510369 + 42693156 = 3537^2 + 6534^2 .

It is not a de Polignac number, because 55203525 - 2¹ = 55203523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55203523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 236809 + ... + 237041.

It is an arithmetic number, because the mean of its divisors is an integer number (1321437).

Almost surely, 2^55203525 is an apocalyptic number.

It is an amenable number.

55203525 is an abundant number, since it is smaller than the sum of its proper divisors (55797183).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55203525 is a wasteful number, since it uses less digits than its factorization.

55203525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55203525 is about 7429.9074691412. The cubic root of 55203525 is about 380.7637570733.

It can be divided in two parts, 5520 and 3525, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 55203525 in words is "fifty-five million, two hundred three thousand, five hundred twenty-five".